FIELD: petrochemistry, more specifically manufacture of phenol and acetone by cumene method. SUBSTANCE: claimed process of treating phenol resin in the production of phenol and acetone by cumene method by liquid extraction using 0.05-0.3% aqueous solution or orthophosphoric acid as extracting agent. Extraction is carried out at phenol to extracting agent ratio of 1: (0.5-1.5) and temperature of 20-80 C. EFFECT: technology enhanced efficient. 2 cl
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